bgp/rib-impl/src/main/java/org/opendaylight/controller/config/yang/bgp/rib/impl/BGPPeerAcceptorModule.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.config.yang.bgp.rib.impl;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.collect.Lists;
  12 import io.netty.channel.ChannelFuture;
  13 import io.netty.util.concurrent.Future;
  14 import io.netty.util.concurrent.GenericFutureListener;
  15 import io.netty.util.internal.PlatformDependent;
  16 import java.net.InetAddress;
  17 import java.net.InetSocketAddress;
  18 import java.net.UnknownHostException;
  19 import java.security.AccessControlException;
  20 import org.opendaylight.controller.config.api.JmxAttributeValidationException;
  21
  22 /**
  23 * BGP peer acceptor that handles incoming bgp connections.
  24 */
  25 public class BGPPeerAcceptorModule extends org.opendaylight.controller.config.yang.bgp.rib.impl.AbstractBGPPeerAcceptorModule {
  26
  27     private static final int PRIVILEGED_PORTS = 1024;
  28
  29     public BGPPeerAcceptorModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier, final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  30         super(identifier, dependencyResolver);
  31     }
  32
  33     public BGPPeerAcceptorModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier, final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, final org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerAcceptorModule oldModule, final java.lang.AutoCloseable oldInstance) {
  34         super(identifier, dependencyResolver, oldModule, oldInstance);
  35     }
  36
  37     @Override
  38     public void customValidation() {
  39         // check if unix root user
  40         if (!PlatformDependent.isWindows() && !PlatformDependent.isRoot() && getBindingPort().getValue() < PRIVILEGED_PORTS) {
  41             throw new AccessControlException("Unable to bind port " + getBindingPort().getValue() + " while running as non-root user.");
  42         }
  43         // Try to parse address
  44         try {
  45             getAddress();
  46         } catch (final IllegalArgumentException e) {
  47             throw new JmxAttributeValidationException("Unable to resolve configured address", e, Lists.newArrayList(bindingAddressJmxAttribute, bindingPortJmxAttribute));
  48         }
  49     }
  50
  51     @Override
  52     public java.lang.AutoCloseable createInstance() {
  53         final ChannelFuture future = getAcceptingBgpDispatcherDependency().createServer(getAcceptingPeerRegistryDependency(), getAddress());
  54
  55         // Validate future success
  56         future.addListener(new GenericFutureListener<Future<Void>>() {
  57             @Override
  58             public void operationComplete(final Future<Void> future) {
  59                 Preconditions.checkArgument(future.isSuccess(), "Unable to start bgp server on %s", getAddress(), future.cause());
  60             }
  61         });
  62
  63         return new AutoCloseable() {
  64             @Override
  65             public void close() {
  66                 // This closes the acceptor and no new bgp connections will be accepted
  67                 // Connections already established will be preserved
  68                 future.cancel(true);
  69                 future.channel().close();
  70             }
  71         };
  72     }
  73
  74     private InetSocketAddress getAddress() {
  75         final InetAddress inetAddr;
  76         try {
  77             inetAddr = InetAddress.getByName(getBindingAddress()
  78                     .getIpv4Address() != null ? getBindingAddress()
  79                     .getIpv4Address().getValue() : getBindingAddress()
  80                     .getIpv6Address().getValue());
  81         } catch (final UnknownHostException e) {
  82             throw new IllegalArgumentException("Illegal binding address " + getBindingAddress(), e);
  83         }
  84         return new InetSocketAddress(inetAddr, getBindingPort().getValue());
  85     }
  86
  87 }